[ 275 ] Life Science GED ® TEST SCIENCE FLASH REVIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • “Muscles are made of bundles of cells wrapped in connective tissue called fascicles.” What word helps you with context for the word fascicles? “Each bundle contains many cylindrical muscle cells or muscle fibers.” What word helps you with context for the phrase muscle fibers? “Like other cells, muscle fibers have mitochondria that provide energy, a plasma membrane that separates the inside and outside of the cell, and endoplasmic reticulum, where proteins are made.” What helps you with context for the phrase endoplasmic reticulum?
